I. According to the Provisions on the Application and Use of Motor Vehicle Driving License
Chapter V Management of Motor Vehicle Drivers
Section III Supervision and Administration
Article 78 If a driver who holds a driver's license for a large bus, tractor, city bus, medium-sized bus or large truck is under any of the following circumstances, the vehicle management office shall cancel his driving qualification of the highest quasi-driving type and notify the motor vehicle driver to handle the business of demotion and replacement within 30 days:
(1) If a traffic accident causes death and bears equal responsibility, it does not constitute a crime;
(2) There is a record of 12 in a scoring cycle;
(3) Failing to take the exam for three consecutive scoring cycles.
If the motor vehicle driver fails to handle the business of demotion and replacement within the specified time, the vehicle management office shall declare the cancellation of the driving qualification of quasi-driving type invalid.
Motor vehicle drivers who apply for cancellation of the quasi-driving type after handling the business of demotion and replacement of certificates shall not record full 12 points in this scoring cycle and the latest scoring cycle before application, and no traffic accident that causes death and bears the same responsibility has occurred.
Seventy-ninth motor vehicle drivers in the internship period of road traffic safety violation record 12 points, cancel their internship driving qualification. If the cancelled driving qualification does not belong to the highest permitted driving type, it shall also be cancelled in accordance with the provisions of the first paragraph of Article 78.
Drivers with driver's licenses for buses, tractors, city buses, medium-sized buses and large trucks who scored more than 6 points during the internship period of 1 year but did not reach 12 points will have their internship period extended 1 year. If you get more than 6 points again during the extended internship period but fail to reach 12 points, your internship driving qualification will be cancelled.
Second, according to the "quasi-driving model and code"
Code B2, large trucks are allowed to drive, and heavy and medium trucks are allowed to drive; Heavy and medium-sized special operation vehicles, other permitted driving models are C 1, C2, C3, C4 and M.